15522220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 38840256

約数和(自身を除く): 23318036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 337, 470, 490, 658, 674, 940, 980, 1316, 1348, 1645, 1685, 2303, 2359, 3290, 3370, 4606, 4718, 6580, 6740, 9212, 9436, 11515, 11795, 15839, 16513, 23030, 23590, 31678, 33026, 46060, 47180, 63356, 66052, 79195, 82565, 110873, 158390, 165130, 221746, 316780, 330260, 443492, 554365, 776111, 1108730, 1552222, 2217460, 3104444, 3880555, 7761110, 15522220]

約数ペア:

[(1, 15522220), (2, 7761110), (4, 3880555), (5, 3104444), (7, 2217460), (10, 1552222), (14, 1108730), (20, 776111), (28, 554365), (35, 443492), (47, 330260), (49, 316780), (70, 221746), (94, 165130), (98, 158390), (140, 110873), (188, 82565), (196, 79195), (235, 66052), (245, 63356), (329, 47180), (337, 46060), (470, 33026), (490, 31678), (658, 23590), (674, 23030), (940, 16513), (980, 15839), (1316, 11795), (1348, 11515), (1645, 9436), (1685, 9212), (2303, 6740), (2359, 6580), (3290, 4718), (3370, 4606)]